Content deleted Content added
copy editing, mostly restoring "luster" spelling |
copy editing lead |
||
Line 14:
'''Metallic bonding''' is a type of [[chemical bond]]ing that arises from the electrostatic attractive force between [[conduction electrons]] (in the form of an electron cloud of [[delocalized electron]]s) and positively charged [[metal]] ions. It may be described as the sharing of ''free'' electrons among a [[crystal structure|structure]] of positively charged ions ([[cations]]). Metallic bonding accounts for many [[physical properties]] of metals, such as [[Strength of materials|strength]], [[ductility]], [[thermal conductivity|thermal]] and [[electrical resistivity, and conductivity]], [[Opacity (optics)|opacity]], and [[lustre (mineralogy)|luster]].<ref>[http://www.chemguide.co.uk/atoms/bonding/metallic.html Metallic bonding]. chemguide.co.uk</ref><ref>[http://www.chemguide.co.uk/atoms/structures/metals.html Metal structures]. chemguide.co.uk</ref><ref>[http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/bond.html Chemical Bonds]. chemguide.co.uk</ref><ref>[https://web.archive.org/web/19991018204506/http://www.physics.ohio-state.edu/%7Eaubrecht/physics133.html "Physics 133 Lecture Notes" Spring, 2004. Marion Campus]. physics.ohio-state.edu</ref>
Metallic bonding is not the only type of [[chemical bond]]ing a metal can exhibit, even as a pure substance. For example, elemental [[gallium]] consists of covalently-bound pairs of atoms in both liquid and solid-state—these pairs form a [[crystal structure]] with metallic bonding between them. Another example of a metal–metal covalent bond is the [[mercurous ion]] ({{chem|Hg|2|2+}}).
==History==
| |||